20279934 has 12 divisors (see below), whose sum is σ = 43939896. Its totient is φ = 6759972.

The previous prime is 20279933. The next prime is 20279939. The reversal of 20279934 is 43997202.

It is a super-2 number, since 2×20279934² = 822551446088712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20279933) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 563314 + ... + 563349.

It is an arithmetic number, because the mean of its divisors is an integer number (3661658).

Almost surely, 2^20279934 is an apocalyptic number.

20279934 is an abundant number, since it is smaller than the sum of its proper divisors (23659962).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20279934 is a wasteful number, since it uses less digits than its factorization.

20279934 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1126671 (or 1126668 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 20279934 is about 4503.3247717659. The cubic root of 20279934 is about 272.7023282034.

The spelling of 20279934 in words is "twenty million, two hundred seventy-nine thousand, nine hundred thirty-four".